Wetterstationen des Deutschen Wetterdienstes (DWD)
| Stationsname (Ort) | Seehöhe | Bundesland |
| Seth | 33 m | SH |
| Setzin-Schwaberow | 40 m | MV |
| Seubersdorf/Oberpfalz | 515 m | BY |
| Sevelen | 30 m | NW |
| Seybothenreuth | 411 m | BY |
| Seybothenreuth (PH) | 420 m | BY |
| Seyda | 80 m | ST |
| Sibbesse | 188 m | NI |
| Sibbesse (Ph) | 188 m | NI |
| Sichau | 60 m | ST |
| Sichau-Tarnefitz | 60 m | ST |
| Sickels | 290 m | HE |
| Sickingen | 530 m | BW |
| Siebeldingen (DLR RLP) | 192 m | RP |
| Sieber | 340 m | NI |
| Siedamsdorf | 400 m | BY |
| Siedenburg-Borstel | 45 m | NI |
| Siedlinghausen | 450 m | NW |
| Siegbach-Eisemroth | 330 m | HE |
| Siegburg | 63 m | NW |
| Siegburg (PH) | 60 m | NW |
| Siegburg-Mülldorf | 60 m | NW |
| Siegen (Kläranlage) | 229 m | NW |
| Siegen (PH) | 240 m | NW |
| Siegen-Eiserfeld | 260 m | NW |
| Siegenburg | 390 m | BY |
| Siegenburg (Kläranlage) | 380 m | BY |
| Siegertsbrunn | 580 m | BY |
| Siegmundsburg | 784 m | TH |
| Siegsdorf | 610 m | BY |
| Siegsdorf | 634 m | BY |
| Siegsdorf-Höll | 719 m | BY |
| Siegsdorf-Maria Eck | 828 m | BY |
| Siehdichum-Pohlitz | 75 m | BB |
| Siek | 60 m | SH |
| Siemen | 15 m | NI |
| Siersburg | 180 m | SL |
| Siershahn | 290 m | RP |
| Siersleben | 215 m | ST |
| Siethen | 45 m | BB |
| Sietow | 65 m | MV |
| Sieversen | 100 m | NI |
| Sieversfleth | 2 m | SH |
| Sievershütten | 35 m | SH |
| Siggelkow-Redlin | 58 m | MV |
| Sigmaringen | 570 m | BW |
| Sigmaringen (Flugplatz) | 645 m | BW |
| Sigmaringen-Laiz | 580 m | BW |
| Sigmarszell-Zeisertsweiler | 507 m | BY |
| Silberg | 340 m | HE |